PCM5310PAPR datasheet(25/103 Pages) TI

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AUDIO SERIAL INTERFACE

PCM5310

www.ti.com ............................................................................................................................................................................................ SLES244 – FEBRUARY 2009

The PCM5310 has six audio interface ports: SCKx, BCKx, LRCKx, and DATAx (bidirectional). Each port or signal

can be connected to any ADC or DAC. If an audio system application wants to bypass an audio signal, the

PCM5310 can bypass from any port to any port. Refer to Figure 33 for a diagram of the of the audio inteface port

and mux. See Figure 47 to Figure 52 for detailed diagrams of PORT-1 to PORT-6.

The audio interface consists of LRCKs, BCKs, and DATAs. The sampling rate (fS), left channel and right channel

data are present on the LRCKs. The DATAs receive the serial audio data from the interpolation filter for the DAC,

and the DATAs transmit the serial data to the decimation filter. The BCKs are used to receive and transmit the

serial audio data on the DATAs by high-to-low transition. The BCKs and LRCKs should be synchronized with the

system clocks, SCKs. The PCM5310 operates with the LRCKs/BCKs synchronized with the SCKs; however, the

PCM5310 does not need a specific phase between the BCKs/LRCKs and the SCKs. Each audio interface port

can select either the master or slave mode, and generate the LRCKs and BCKs from the SCKs in master mode.

The descriptions for the audio serial interface registers are shown in Table 6.

Table 10. Audio Serial Interface Registers

Master or slave with fS detection for DAC12

DMS12[3:0]

Audio interface format for DAC12

DFM12[1:0]

Master or slave with fS detection for DAC34

DMS34[3:0]

Audio interface format for DAC34

DFM34[1:0]

Master or slave with fS detection for ADC12

AMS12[3:0]

Audio interface format for ADC12

AFM12[1:0]

Master or slave with fS detection for ADC34

AMS34[3:0]

Audio interface format for ADC34

AFM34[1:0]

LRCK/BCK selection of PORT-1 and PORT-2

101

LBS2[3:0], LBS1[3:0]

DATA selection of PORT-1 and PORT-2

102

DTS2[3:0], DTS1[3:0]

SCK selection of PORT-1 and PORT-2

103

SCS2[2:0], SCS1[2:0]

LRCK/BCK selection of PORT-3 and PORT-4

104

LBS4[3:0], LBS3[3:0]

DATA selection of PORT-3 and PORT-4

105

DTS4[3:0], DTS3[3:0]

SCK selection of PORT-3 and PORT-4

106

SCS4[2:0], SCS3[2:0]

LRCK/BCK selection of PORT-5 and PORT-6

107

LBS6[3:0], LBS5[3:0]

DATA selection of PORT-5 and PORT-6

108

DTS6[3:0], DTS5[3:0]

SCK selection of PORT-5 and PORT-6

109

SCS6[2:0], SCS5[2:0]

LRCK/BCK selection of DAC12 and DAC34

110

D34LB[3:0], D12LB[3:0]

DATA selection of DAC12 and DAC34

111

D34DT[3:0], D12DT[3:0]

SCK selection of DAC12 and DAC34

112

D34S[2:0], D12S[2:0]

LRCK/BCK selection of ADC12 and ADC34

116

A34LB[3:0], A12LB[3:0]

SCK selection of ADC12 and ADC34

117

A34SC[2:0], A12SC[2:0]

GPIO-1 and GPIO-2 audio data selection

118

GP2S[3:0], GP1S[3:0]

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